Physical Chemistry Exam Review 174

# Physical Chemistry Exam Review 174 - P hysical Science...

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Physical Science Activities Manual ________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________ Center of Excellence for Science and Mathematics Education at The University of Martin Decay Rate of Orangium # of Tosses 0 50 100 150 200 250 300 350 400 450 500 0 5 10 15 7. Read from the graph the "half-life" of "ORANGIUM" (the number of tosses it took for half of the total cubes to come up with an orange face.) [If the total # of cubes was 500, then how many tosses did it require for 250 of them to come up with an orange face? On the y-axis find 250; draw a line horizontal to the x-axis (the dotted line) starting at 250 and stopping when it reaches the curve. Now starting at this point on the curve, draw a line parallel to the y-axis (dotted line) until it crosses the x-axis. Read how many tosses it says it took to have 250 cubes come up with an orange face. Does this match up with how many throws it took? Check your data table. According to our mythical data the graph would indicate that about 3.8 tosses would be required to have 250 of the cubes come up with an orange face. If we look at the table we see that after three tosses 206 of them had come up orange.
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